Šabac (Serbian: Шабац) is a city and municipality located in Serbiaat 44.76° North, 19.69° East along the Sava river in the historic region of Mačva. It is the administrative center of the Mačva District of Serbia. The city has a population of 55,163 (2002), while population of the municipality is 122,893. It gained city rights in 2007 by the decision of the National Assembly of Serbia.

The city and the periphery number around 75,000 residents today, making it one of the larger cities in Serbia.

Today there are some powerful companies like "Šabačka Mlekara", "Narcis Popović", "Zorka Pharma" and US Steel. The main destiantion of Šabac today are agriculture, transportation and food industry.Partner citiesŠabac is twinned with the following cities: